As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
RETURNED TO LGA FOR A DIRTY SOCK/MUSTY SMELL THROUGHOUT THE CABIN. CREW REPORTED CHEMICAL SMELL THROUGHOUT CABIN. FOUND HYDRAULIC LEAK ON #2 ENGINE CASE DRAIN AND PRESSURE HOSE. PACKING ON COUPLER FOUND CUT. SAME REPLACED. (LP# 7965319, 1507109, 7965321)